access modifier protected in java code example

Example 1: java protected

/* similar to private keyword, but also lets both:
  - subclasses
  - classes in same package
  access the variable, method or constructor */

class Superclass {
  protected int myNumber = 5;
}

class Subclass extends SuperClass {
  // has access to myNumber
}

class InAnotherPackage {
  // doesn't have access to myNumber
}

Example 2: access modifiers in java

Example of private access modifier:

class Demo
{
   private void display()
   {
      System.out.println("Hello world java");
   }
}
public class PrivateAccessModifierExample
{
   public static void main(String[] args)
   {
      Demo obj = new Demo();
      System.out.println(obj.display());
   }
}